PreprintCited by 20Virus-based gene therapy researchRetinal Development and DisordersRNA Interference and Gene Delivery

Directed Evolution of AAV Targeting Primate Retina by Intravitreal Injection Identifies R100, a Variant Demonstrating Robust Gene Delivery and Therapeutic Efficacy in Non-Human Primates

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Kotterman, Melissa, Beliakoff, Ghezal, Croze, Roxanne, Vazin, Tandis, Schmitt, Christopher, Szymanski, Paul, Leong, Meredith, Quezada, Melissa +6 more·2021·bioRxiv (Cold Spring Harbor Laboratory)

Abstract

Targeted AAV vectors are needed for safe and efficient delivery to and transduction of specific tissue target(s) in patients. Effective intravitreal delivery for retina gene therapy is not feasible with wildtype AAV. We employed directed evolution in nonhuman primates (NHP) to discover an AAV variant (R100) for intravitreal treatment of multiple target cells in the primate retina. R100 demonstrated superior transduction of human retinal cells compared to wildtype AAV. Furthermore, three R100-based gene therapeutics demonstrated safety, delivery, and durable pan-retinal expression of intracellular or secreted transgenes throughout the NHP retina following intravitreal administration. Finally, efficacy of R100-mediated delivery of therapeutic transgenes was demonstrated in patient-derived retinal cells (monogenic diseases) and in an NHP model of pathogenic retinal angiogenesis.

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  1. [9]9. Knipe, D. M. & Howley, P. M. Fields' Virology . (Lippincott Williams & Wilkins, Philadelphia, PA, USA, 2007).

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Authors
Kotterman, M., Beliakoff, G., Croze, R., Vazin, T., Schmitt, C., Szymanski, P., Leong, M., Quezada, M., Holt, J., Barglow, K., Hassanipour, M., Schaffer, D., Francis, P., & Kirn, D.
Affiliations
University of California, Berkeley (US)
Corresponding author
Kotterman, Melissa
Venue
bioRxiv (Cold Spring Harbor Laboratory)
Publisher
openRxiv
Published
2021-06-25
OpenAlex
W3176322268
Cited by
20
References
87
Citations by year
2026: 4 · 2025: 4 · 2024: 3 · 2023: 5 · 2022: 3 · 2021: 1
Type
posted content
Language
en
Open access
Locations
bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion)
Funders
F. Hoffmann-La Roche
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Virus-based gene therapy research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Retinal Development and Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Interference and Gene Delivery
Keywords
adeno-associated virus, intravitreal injection, retinal gene therapy, primate retina, non-human primates, retinal transduction, retinal angiogenesis, gene delivery

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